Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluation
This study proposes a cost-effective multigeneration system that integrates a supercritical carbon dioxide (sCO2) power cycle with a liquefied natural gas (LNG) regasification process. The system aims to deliver electricity, cooling, heating, and hydrogen simultaneously. Utilizing the temperature di...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-04-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24002363 |
| _version_ | 1797230590734368768 |
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| author | Mohamed S. Yousef A.A. Hawwash Domingo Santana |
| author_facet | Mohamed S. Yousef A.A. Hawwash Domingo Santana |
| author_sort | Mohamed S. Yousef |
| collection | DOAJ |
| description | This study proposes a cost-effective multigeneration system that integrates a supercritical carbon dioxide (sCO2) power cycle with a liquefied natural gas (LNG) regasification process. The system aims to deliver electricity, cooling, heating, and hydrogen simultaneously. Utilizing the temperature difference between the sCO2 cycle and the LNG thermal sink, an ammonia-water-based absorption refrigeration cycle (ARC) recovers waste heat from the sCO2 power cycle, producing cooling. The elevated ammonia concentration at the ARC's condenser outlet is leveraged by a heat pump system for heating production. Concurrently, cold energy from LNG is used to recover latent heat from the condenser and heat rejected from the sCO2 power cycle, providing inputs for additional electrical power through an NG turbine. The system incorporates a PEM electrolyzer (PEME) for hydrogen production. A comprehensive examination, including energy, exergy, and exergoeconomic analyses, evaluates system performance. A sensitivity analysis illustrates the impacts of key parameters. In the baseline scenario, the system achieves energy and exergy efficiencies of 62.79% and 54.89%, with a low product unit cost of 11.35 ($/GJ). The system demonstrates substantial net power output (259.184 MW), cooling capacity (88.938 MW), heating capacity (2.839 MW), and hydrogen production (391.68 kg/h). This robust performance, coupled with cost-effectiveness, positions the proposed system as a versatile and impactful solution for sustainable and environmentally friendly energy applications. |
| first_indexed | 2024-04-24T15:30:55Z |
| format | Article |
| id | doaj.art-9763196d41df4568b7d65393e2bf9d16 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-24T15:30:55Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-9763196d41df4568b7d65393e2bf9d162024-04-02T04:14:59ZengElsevierCase Studies in Thermal Engineering2214-157X2024-04-0156104205Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluationMohamed S. Yousef0A.A. Hawwash1Domingo Santana2Department of Thermal and Fluids Engineering, Carlos III University of Madrid, Avda. de la Universidad 30, 28911, Leganés, Madrid, Spain; Department of Mechanical Engineering, Benha Faculty of Eng., Benha University, Benha, Egypt; Corresponding author. Department of Thermal and Fluids Engineering, Carlos III University of Madrid, Avda. de la Universidad 30, 28911, Leganés, Madrid, Spain.Department of Mechanical Engineering, Benha Faculty of Eng., Benha University, Benha, EgyptDepartment of Thermal and Fluids Engineering, Carlos III University of Madrid, Avda. de la Universidad 30, 28911, Leganés, Madrid, SpainThis study proposes a cost-effective multigeneration system that integrates a supercritical carbon dioxide (sCO2) power cycle with a liquefied natural gas (LNG) regasification process. The system aims to deliver electricity, cooling, heating, and hydrogen simultaneously. Utilizing the temperature difference between the sCO2 cycle and the LNG thermal sink, an ammonia-water-based absorption refrigeration cycle (ARC) recovers waste heat from the sCO2 power cycle, producing cooling. The elevated ammonia concentration at the ARC's condenser outlet is leveraged by a heat pump system for heating production. Concurrently, cold energy from LNG is used to recover latent heat from the condenser and heat rejected from the sCO2 power cycle, providing inputs for additional electrical power through an NG turbine. The system incorporates a PEM electrolyzer (PEME) for hydrogen production. A comprehensive examination, including energy, exergy, and exergoeconomic analyses, evaluates system performance. A sensitivity analysis illustrates the impacts of key parameters. In the baseline scenario, the system achieves energy and exergy efficiencies of 62.79% and 54.89%, with a low product unit cost of 11.35 ($/GJ). The system demonstrates substantial net power output (259.184 MW), cooling capacity (88.938 MW), heating capacity (2.839 MW), and hydrogen production (391.68 kg/h). This robust performance, coupled with cost-effectiveness, positions the proposed system as a versatile and impactful solution for sustainable and environmentally friendly energy applications.http://www.sciencedirect.com/science/article/pii/S2214157X24002363sCO2 cycleARCLNGCoolingHeatingHydrogen |
| spellingShingle | Mohamed S. Yousef A.A. Hawwash Domingo Santana Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluation Case Studies in Thermal Engineering sCO2 cycle ARC LNG Cooling Heating Hydrogen |
| title | Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluation |
| title_full | Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluation |
| title_fullStr | Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluation |
| title_full_unstemmed | Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluation |
| title_short | Assessment of a sustainable multigeneration system integrating supercritical CO2 Brayton cycle and LNG regasification: Thermodynamic and exergoeconomic evaluation |
| title_sort | assessment of a sustainable multigeneration system integrating supercritical co2 brayton cycle and lng regasification thermodynamic and exergoeconomic evaluation |
| topic | sCO2 cycle ARC LNG Cooling Heating Hydrogen |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24002363 |
| work_keys_str_mv | AT mohamedsyousef assessmentofasustainablemultigenerationsystemintegratingsupercriticalco2braytoncycleandlngregasificationthermodynamicandexergoeconomicevaluation AT aahawwash assessmentofasustainablemultigenerationsystemintegratingsupercriticalco2braytoncycleandlngregasificationthermodynamicandexergoeconomicevaluation AT domingosantana assessmentofasustainablemultigenerationsystemintegratingsupercriticalco2braytoncycleandlngregasificationthermodynamicandexergoeconomicevaluation |